function default_param	=	esvm2_cluster_parameters

default_param.cluster_method = 1;   % 1-- k max neigbor, 2 --- greedy algorithm 
default_param.cluster_num	 = 1;   % cluster num in each iteration 
default_param.mine_negtive_thresh	=  -1;
default_param.mine_postive_thresh	=  -1;
default_param.mine_negtive_num		=	500;
default_param.train_boost_thresh	=	0.01;